Nanotube molecular probes: DNA hybridization using single walled carbon nanotubes as biomarkers

Chengfan Cao, Sanghyun Hong, Jae Boong Choi, Young Jin Kim, Seunghyun Baik, Eung Soo Hwang, Hye Jin Jung, Ng Yong Cha

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Single walled carbon nanotubes (SWNTs) hold particular advantage as optical nano-bio markers because they exhibit strong Raman signals. Such signals do not blink or photobleach under prolonged excitation. Here, new single-stranded DNA conjugated SWNT probes were developed to locate a particular sequence of DNA within a complex genome. Chromosomal DNAs of human fibroblast and Escherichia coli (E.coli) were used as a target and a control, respectively. Southern blotting, which uses photostable Raman signals of nanotubes instead of fluorescent dyes, demonstrated excellent sensitivity and specificity of the probes. The results showed SWNTs' possibility of being generic nano-bio markers for precise detection of specific kinds of genes.

Original languageEnglish
Title of host publication2006 5th IEEE Conference on Sensors
Pages1272-1275
Number of pages4
DOIs
StatePublished - 2006
Event2006 5th IEEE Conference on Sensors - Daegu, Korea, Republic of
Duration: 22 Oct 200625 Oct 2006

Publication series

NameProceedings of IEEE Sensors

Conference

Conference2006 5th IEEE Conference on Sensors
Country/TerritoryKorea, Republic of
CityDaegu
Period22/10/0625/10/06

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